JP2021194944A - Vehicular side door structure - Google Patents

Abstract

To provide a vehicular side door structure which can achieve weight reduction of a side door and occupant safety during a side collision of a vehicle.SOLUTION: A vehicular side door structure includes: an outer member 10; an inner member 30 having a front vertical wall part 41 and a rear vertical wall part 42; and an impact bar 46 installed from front attachment parts 41s, 41t of the front vertical wall part 41 to rear attachment parts 42s, 42t of the rear vertical wall part 42. The vehicular side door structure has: a hinge reinforcement member 54 which reinforces a hinge attachment part 41d for attaching a hinge 51 to the front vertical wall part 41; and a latch reinforcement member 55 which reinforces a latch attachment part 42d for attaching a latch device 52 to the rear vertical wall part 42. The front vertical wall part 41 and the rear vertical wall part 42 are formed into a cast/resin vertical wall part by a cast forming material or a high strength resin material. The hinge reinforcement member 54 and the latch reinforcement member 55 have higher ductility than those of the front vertical wall part 41 and the rear vertical wall part 42 and are connected to the impact bar 46.SELECTED DRAWING: Figure 8

Description

The present invention relates to a vehicle side door structure having an impact bar erected from a front mounting portion formed on the front vertical wall portion to a rear mounting portion formed on the rear vertical wall portion.

Conventionally, for vehicles in which the door outer panel and the door inner panel are made of a light alloy material such as an aluminum alloy (hereinafter abbreviated as Al alloy) or a high-strength resin material such as CFRP for the purpose of improving fuel efficiency by reducing the weight of the vehicle. The side door structure is known. Due to the material characteristics, castings and high-strength resin materials are superior in formability to wrought materials. Therefore, door inner panels, which usually have a three-dimensionally complicated shape, are made of Al alloy castings or high-strength resin materials. The door outer panel, which is molded and has a simple shape, is molded from Al alloy wrought material.
Further, from the viewpoint of occupant protection in the event of a vehicle side collision, a structure in which a side impact bar is erected from the front vertical wall portion to the rear vertical wall portion of the door inner panel is also known.

The automobile door of Patent Document 1 includes an Al alloy casting front vertical frame (front vertical wall portion) in which a hinge mounting bracket is integrally molded, and an Al alloy casting rear vertical frame in which a locking mounting piece is integrally molded. , Upper outer reinforcement and lower outer reinforcement arranged at the upper and lower positions of both vertical frames, guard bar (impact bar) arranged at the middle position of both vertical frames, and upper outer reinforcement. It is equipped with an upper inner reinforcement arranged between the guard bars, a lower inner reinforcement arranged between the guard bar and the lower outer reinforcement, and an outer panel connected to the flanges of both vertical frames by hemming. Each reinforcement and guard bar is formed into a solid state by extrusion molding of an Al alloy material, and is fastened and fixed to a mounting portion (screw hole region) formed in both vertical frames.

Jikkenhei 6-072714 Gazette

In the automobile door of Patent Document 1, since the main members such as both vertical frames and each reinforcement are made of Al alloy material, it is possible to reduce the weight of the side door from the material aspect.
However, with the technique of Patent Document 1, there is a possibility that the intrusion of the impact bar into the vehicle interior cannot be sufficiently suppressed at the time of a vehicle side collision.

In casting molding, heat treatment such as aging treatment is performed in order to improve so-called mechanical properties such as tensile strength, proof stress, and hardness. Due to the interaction between the microscopic structure formed by the precipitation of crystals and the dislocations caused by this heat treatment, the casting lacks superiority in ductility and impact resistance as compared with the wrought material.
Further, even in the case of a high-strength resin material, due to its material properties, it lacks superiority in terms of ductility and impact resistance as compared with a wrought material.
Therefore, when an impact load acts on the impact bar due to a side collision and stress is concentrated on the mounting portion of the impact bar, cracks such as cracks may occur in the vertical frame starting from the vicinity of the mounting portion, and this crack may occur. There is a concern that the impact bar may invade the passenger compartment due to the occurrence of the above.
Further, it is conceivable to increase the impact resistance of the vertical frame by thickening the vicinity of the mounting portion of the impact bar, but since it causes an increase in weight, there is a possibility that the initially expected weight reduction effect may be reduced.
That is, it is not easy to achieve both weight reduction of the side door and improvement of performance at the time of collision on the vehicle side.

An object of the present invention is to provide a vehicle side door structure or the like that can achieve both weight reduction of the side door and improvement of vehicle side collision performance.

The vehicle side door structure according to claim 1 is locked to the outer member, the front vertical wall portion in the front-rear direction of the vehicle body, and the vehicle body, which are connected to the outer member and provided with a hinge that can rotate with respect to the vehicle body. / An inner member having a rear vertical wall portion in the front-rear direction of the vehicle body provided with an unlockable latch device, and a front mounting portion formed on the front vertical wall portion formed on the rear vertical wall portion. In a vehicle side door structure equipped with an impact bar erected over a rear mounting portion, a hinge that is connected to the hinge and reinforces the hinge mounting portion for mounting the hinge on the front vertical wall portion. It has a reinforcing member and a latch reinforcing member that is connected to the latch device and reinforces the latch mounting portion for mounting the latch device on the rear vertical wall portion, and has the front vertical wall portion and the rear vertical wall portion. At least one of the vertical wall portions is formed of a casting / resin vertical wall portion by casting or molding or a high-strength resin material, and the casting / resin vertical wall portion of the hinge reinforcing member and the latch reinforcing member is formed. The cast / resin reinforcing member, which is a provided reinforcing member, is characterized in that it has a higher ductility than the cast / resin vertical wall portion and is connected to the impact bar.

In the side door structure of this vehicle, a hinge reinforcing member that is connected to the hinge and reinforces the hinge mounting portion for mounting the hinge on the front vertical wall portion, and a hinge reinforcing member that is connected to the latch device and that is connected to the rear vertical wall portion. Since the wall portion has a latch reinforcing member for reinforcing the latch mounting portion for mounting the latch device, it is possible to strengthen the connection between the hinge connected to the vehicle body and the front vertical wall portion, and the latch device connected to the vehicle body. The connection with the rear vertical wall can be strengthened. Since at least one of the front vertical wall portion and the rear vertical wall portion is made of a casting / resin vertical wall portion by casting or molding or a high-strength resin material, a light alloy material such as an aluminum alloy is used. The weight of the side door can be reduced by casting or molding using a high-strength resin material. Of the hinge reinforcing member and the latch reinforcing member, the casting / resin reinforcing member, which is a reinforcing member provided on the casting / resin vertical wall portion, has higher ductility than the casting / resin vertical wall portion. Since it is connected to the impact bar at the same time, even if the vicinity of the impact bar mounting part of the vertical wall of the casting is damaged due to stress concentration at the time of collision on the vehicle side, the impact load acting on the impact bar is reinforced for casting / resin. It can be distributed and transmitted to the vehicle body via the member, and the impact bar can be prevented from entering the vehicle interior.

In the invention of claim 2, the front vertical wall portion and the rear vertical wall portion are formed of a casting / resin vertical wall portion by casting or molding with a high-strength resin material, and the impact bar is provided. Both ends are characterized in that they are connected to the hinge reinforcing member and the latch reinforcing member, respectively. According to this configuration, the weight of the side door can be further reduced. Further, the impact load acting on the impact bar can be distributed and transmitted to the vehicle body via the hinge reinforcing member and the latch reinforcing member, and the impact bar can be further prevented from entering the vehicle interior.

According to a third aspect of the present invention, in the second aspect of the present invention, the front vertical wall portion includes a plurality of front mounting portions arranged along the longitudinal direction of the impact bar, and the plurality of front mounting portions extending in the vehicle width direction. The rear vertical wall portion has one or a plurality of rib portions connecting the front mounting portions of the above, and the rear vertical wall portion includes a plurality of the rear mounting portions arranged along the longitudinal direction of the impact bar and a vehicle width. It is characterized by having one or a plurality of rib portions extending in a direction and connecting the plurality of rear mounting portions. According to this configuration, bending moments can be generated at both ends of the impact bar, and the amount of the impact bar entering the vehicle interior can be reduced at the time of a vehicle side collision.

According to a fourth aspect of the present invention, in the second or third aspect of the present invention, the front vertical wall portion has a pair of upper and lower hinges, and the hinge reinforcing member has a hinge mounting portion for mounting the pair of hinges. It is arranged so as to be reinforced, and the front end portion of the impact bar is connected to the hinge reinforcing member at a position corresponding to the position between the pair of hinges. According to this configuration, the impact load acting on the impact bar can be distributed and transmitted to the pair of upper and lower hinges via the hinge reinforcing member, and the support rigidity of the front end portion of the impact bar can be improved.

The invention of claim 5 is the invention of any one of claims 2 to 4, wherein the rear vertical wall portion extends forward from a corner portion formed at the lower end portion in the front-rear direction of the vehicle body to reinforce the latch. The member is arranged from the latch mounting portion to the corner portion, and the rear end portion of the impact bar is connected to the latch reinforcing member at the corner portion. According to this configuration, the support rigidity of the rear end portion of the impact bar can be improved.

The invention of claim 6 is the invention of any one of claims 2 to 5, wherein the inner member is a belt line reinforcing member that connects the upper end portions of the front vertical wall portion and the rear vertical wall portion in the front-rear direction. The hinge reinforcing member is disposed from the hinge mounting portion to the upper end portion of the front vertical wall portion, and the latch reinforcing member is arranged from the latch mounting portion to the upper end portion of the rear vertical wall portion. It is characterized in that the front and rear end portions of the belt line reinforcing member are connected to the upper end portions of the hinge reinforcing member and the latch reinforcing member, respectively. According to this configuration, in addition to distributing the impact load acting on the impact bar to the vehicle body via the hinge and the latch device, the impact bar penetrates into the vehicle interior by being distributed and transmitted to the beltline reinforcing member. Can be further avoided.

According to the vehicle side door structure of the present invention, by forming a reinforcing member that transmits the impact load acting on the impact bar to the vehicle body side, both the weight reduction of the side door and the occupant safety in the event of a vehicle side collision are achieved. can do.

It is a right side view of the vehicle provided with the side door structure which concerns on Example 1. FIG. It is an exploded perspective view of a side door. It is an exploded perspective view of the outer member. It is an exploded perspective view of a frame member. It is an inside side view of a side door. It is the outside side view of the side door which omitted the outer panel and the inner panel. It is the inside side view of the side door which omitted the outer panel, the inner panel and the covering member. It is the figure which omitted the door part from FIG. It is an outside view of the front vertical wall part. It is the outside side view of the rear side vertical wall part. FIG. 5 is a sectional view taken along line XI-XI of FIG. FIG. 5 is a sectional view taken along line XII-XII of FIG. FIG. 6 is a sectional view taken along line XIII-XIII of FIG. FIG. 6 is a sectional view taken along line XIV-XIV of FIG. FIG. 5 is a cross-sectional view taken along the line XV-XV of FIG. FIG. 5 is a sectional view taken along line XVI-XVI of FIG. It is a perspective view of the hinge reinforcing member. It is a perspective view of the latch reinforcement member.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The following description of preferred embodiments is merely exemplary and is not intended to limit the invention, its applications or its uses.

Hereinafter, Example 1 of the present invention will be described with reference to FIGS. 1 to 18.
As shown in FIG. 1, the vehicle V according to the first embodiment is a two-door hardtop type passenger car, and includes a pair of left and right sashless type side doors 1. Since this vehicle V has a symmetrical structure, the right side portion will be mainly described below. Further, in the figure, it is assumed that the arrow F direction indicates the front, the arrow OUT direction indicates the outside in the vehicle width direction, and the arrow U direction indicates the upper direction.

The vehicle V includes a side sill 2 extending in the front-rear direction, a hinge pillar 3 erected above the side sill 2, a center pillar 4 erected above the side sill 2 behind the hinge pillar 3, and an upper end portion of the hinge pillar 3. It has a front pillar 5 extending from the upper side to the rear, a roof side rail 6 connecting the front pillar 5 and the upper end portion of the center pillar 4, and the like. The side door 1 is configured to open and close the door opening formed by these vehicle body skeleton members 2 to 6.

As shown in FIG. 2, the side door 1 has an outer member 10 constituting an outer portion in the vehicle width direction, an inner member 30 constituting an inner portion in the vehicle width direction, and an impact made of an aluminum alloy (hereinafter abbreviated as Al alloy). The main components are functional door parts (accessories) including the bar 46 and the door glass unit 60. The outer member 10 and the inner member 30 are basically made of a light alloy material, for example, an Al alloy material.

First, the outer member 10 will be described.
As shown in FIG. 3, the outer member 10 is connected to the outer panel 11 which forms a curved design surface portion and is formed in a substantially rectangular shape in a side view, and is connected to the outer peripheral edge portion of the outer panel 11 by hemming processing and has a side surface. It is provided with a frame member 12 or the like having a substantially rectangular annular shape visually.
The outer panel 11 and the frame member 12 are each press-molded with a panel material made of an Al alloy material, for example, a wrought material having a thickness of 0.8 mm.

The frame member 12 has a front frame portion 21 extending in the vertical direction, a rear frame portion 22 extending in the vertical direction behind the front frame portion 21, and an upper end portion of the front frame portion 21 and the rear frame portion 22 in the front-rear direction. It is composed of an upper frame portion 23 connected to the upper frame portion 23 and a lower frame portion 24 connecting the lower end portions of the front frame portion 21 and the rear frame portion 22 in the front-rear direction. Each frame portion 21 to 24 includes a hem portion 21a to 24a sandwiched by hemming on the outer peripheral edge portion of the outer panel 11 and a connection wall portion 21a to 24b to be fastened and fixed to the inner member 30 via the fastening member b1. Each has. A beltline seal outer member (not shown) is attached to the connection wall portion 23b.

As shown in FIGS. 13 and 15, the connecting wall portion 21b is bent inward in the vehicle width direction from the rear side (inner peripheral side) portion of the hem portion 21a and constitutes a surface substantially orthogonal to the vehicle width direction. The mounting portion 21c is formed. As shown in FIGS. 11, 12, 14, and 16, the connecting wall portion 22b is bent inward in the vehicle width direction from the front side (inner peripheral side) portion of the hem portion 22a and is substantially orthogonal to the vehicle width direction. A frame mounting portion 22c constituting the surface is formed. Similarly, for the connecting wall portions 23b and 24b, frame mounting portions 23c and 24c forming planes substantially orthogonal to the vehicle width direction are formed.

Next, the inner member 30 will be described.
As shown in FIG. 2, the inner member 30 supports the inner panel 31 which forms the side wall portion of the passenger compartment and is formed in a substantially rectangular shape in a side view, the inner panel 31, and various functional door parts. It includes a substantially rectangular annular frame member 32 and the like that form the skeleton portion of the side door 1. The inner panel 31 is press-molded from a panel material made of an Al alloy material, for example, a wrought material having a thickness of 0.8 mm.

As shown in FIG. 4, the frame member 32 includes a front vertical wall portion 41 extending in the vertical direction, a rear vertical wall portion 42 extending in the vertical direction behind the front vertical wall portion 41, and a front vertical wall portion 41. The beltline rain outer member 43 that connects the upper end portion of the rear vertical wall portion 42 and the upper end portion of the front vertical wall portion 41 and the rear vertical wall portion 42 are connected to each other, and the beltline rain outer member 43 is used as a vehicle. It is composed of a beltline rain inner member 44 spaced apart from each other in the width direction, and a lower wall portion 45 connecting the lower end portions of the front vertical wall portion 41 and the rear vertical wall portion 42 via a fastening member. In the present embodiment, the front vertical wall portion 41 and the rear vertical wall portion 42 correspond to the casting vertical wall portion.

The front vertical wall portion 41 and the rear vertical wall portion 42 are formed by casting using an Al alloy material, and are each composed of, for example, an Al alloy casting having a thickness of 1.5 to 2.0 mm. The beltline rain outer member 43 and the beltline rain inner member 44 are formed by extrusion molding using an Al alloy material. The lower wall portion 45 is press-molded with a panel material made of an Al alloy material, for example, a wrought material having a thickness of 0.8 mm.

As shown in FIGS. 7 to 9, 13, and 15, the front vertical wall portion 41 is connected to the front wall portion 41a orthogonal to the front-rear direction and the inner end portion of the front wall portion 41a in the vehicle width direction, and has a vehicle width. It has an inner wall portion 41b orthogonal to the direction and a flange portion 41f orthogonal to the vehicle width direction on the outer peripheral edge portion, and extends rearward from the corner portion 41c formed at the lower end portion. A bent portion 41e that bends and extends inward in the vehicle width direction is formed on the outer peripheral edge portion of the flange portion 41f rearward from the corner portion 41c. The flange portion 41f is overlapped with the frame mounting portion 21c and fastened and fixed via a plurality of removable fastening members b1.

A pair of front and rear mounting portions 41s and 41t for fixing the impact bar 46 to the front vertical wall portion 41 and a plurality of rib portions 41u are provided in the vicinity of the middle portion of the front vertical wall portion 41.
The pair of front mounting portions 41s and 41t are formed in a partially cylindrical shape, respectively, and are formed so as to bulge outward in the vehicle width direction from the inner wall portion 41b. The front mounting portions 41s and 41t are arranged along the axis of the impact bar 46, and the front mounting portion 41s is arranged at a position on the front side of the front mounting portion 41t. The plurality of rib portions 41u are formed so as to extend outward in the vehicle width direction from the inner wall portion 41b, and are connected to the side wall portions of the front mounting portions 41s and 41t. As shown in FIG. 9, a part of the rib portions 41u among the plurality of rib portions 41u connects the side wall portion of the front side mounting portion 41s and the side wall portion of the front side mounting portion 41t side by side.

As shown in FIGS. 5 to 8, 13, and 15, a pair of upper and lower steel hinges 51 provided in the upper half and a pair of hinges 51 are attached to the front vertical wall portion 41. It has a pair of upper and lower hinge mounting portions 41d and a hinge reinforcing member 54 (reinforcing member for casting) that reinforces these hinge mounting portions 41d. As shown in FIG. 9, the pair of hinge mounting portions 41d are arranged with the front mounting portion 41s interposed therebetween. The pair of hinges 51 have a front end portion fastened and fixed to the hinge pillar 3 and the other end end fastened and fixed to the hinge mounting portion 41d set on the front wall portion 41a, and the side door 1 is a rotating shaft extending in the vertical direction. It supports it so that it can rotate around.

The hinge reinforcing member 54 is formed by press forming a material having higher ductility than Al alloy casting, for example, steel plate. As shown in FIGS. 8 and 17, the hinge reinforcing member 54 is substantially divided into a pair of upper and lower hinge connecting portions 54a that can overlap the rear surface portion of the pair of hinge mounting portions 41d and a pair of hinge connecting portions 54a. An impact bar connecting portion 54b that is orthogonally connected and can be overlapped on the tops of the front mounting portions 41s and 41t is integrally provided.

Three bolt holes are formed in each of the pair of hinge connecting portions 54a, and two bolt holes are formed in the impact bar connecting portion 54b. As shown in FIG. 13, the impact bar connecting portion 54b is fastened together with the front end portion of the impact bar 46 via a fastening member b2 inserted into a bolt hole at the top of the front mounting portions 41s and 41t. As shown in FIG. 15, the pair of hinge connecting portions 54a are fastened together with the pair of hinges 51 via the fastening member b3 inserted into the bolt holes in the pair of hinge mounting portions 41d. As a result, the impact load acting on the impact bar 46 is distributed and transmitted from the hinge reinforcing member 54 to the hinge pillar 3 via the pair of hinges 51.

As shown in FIGS. 7, 8, 10, 12, and 14, the rear vertical wall portion 42 has a rear wall portion 42a orthogonal to the front-rear direction and a vehicle width direction of the rear wall portion 42a. It has an inner wall portion 42b that is connected to the inner end portion and is orthogonal to the vehicle width direction, and a flange portion 42f that is orthogonal to the vehicle width direction at the outer peripheral edge portion, and is extended forward from the corner portion 42c formed at the lower end portion. There is. A bent portion 42e that bends and extends inward in the vehicle width direction is formed on the outer peripheral edge portion of the flange portion 42f. The flange portion 42f is overlapped with the frame mounting portion 22c and fastened and fixed via a plurality of detachable fastening members b1. Reference numeral 7 is an interior trim, and reference numeral 59 is a door trim.

The corner portion 42c is provided with a pair of front and rear mounting portions 42s and 42t for fixing the impact bar 46 to the rear vertical wall portion 42, and a plurality of rib portions 42u.
The pair of rear mounting portions 42s and 42t are formed in a partially cylindrical shape, respectively, and are formed so as to bulge outward in the vehicle width direction from the inner wall portion 42b. The front mounting portion 42s is arranged along the axis of the impact bar 46 at a position on the front side above the rear mounting portion 42t. The plurality of rib portions 42u are formed so as to extend outward in the vehicle width direction from the inner wall portion 42b, and are connected to the side wall portions of the rear mounting portions 42s and 42t. As shown in FIG. 10, some of the rib portions 42u among the plurality of rib portions 42u have the side wall portion of the rear mounting portion 42s and the side wall portion of the rear mounting portion 42t along the axial direction of the impact bar 46. The other rib portion 42u connects the rear wall portion 42a and the side wall portion of the rear mounting portion 42s.

As shown in FIGS. 6, 8, 11, 12, and 16, the rear vertical wall portion 42 has a latch device 52 provided in the middle stage and a latch mounting portion for mounting the latch device 52. It has a 42d and a latch reinforcing member 55 (reinforcing member for casting) that reinforces the latch mounting portion 42d. The latch device 52 is composed of a steel lock member (not shown), a steel casing or the like for accommodating the lock member, and is detachably formed on a U-shaped striker 53 fixed to the center pillar 4. There is. When the lock member engages with the striker 53, the side door 1 is locked, and when the lock member is disengaged from the striker 53, the side door 1 is unlocked.

The latch reinforcing member 55 is formed by press forming a material having higher ductility than Al alloy casting, for example, steel plate. As shown in FIGS. 8 and 18, the latch reinforcing member 55 is connected to the latch connecting portion 55a that can overlap the front portion of the latch mounting portion 42d in a substantially orthogonal manner and is connected to the latch connecting portion 55a in a substantially orthogonal manner, and the rear mounting portion 42s. , The top of 42t is integrally provided with an impact bar connecting portion 55b that can be overlapped. The latch connecting portion 55a is bent in the inner portion in the vehicle width direction and extends forward along the inner wall portion 42b, and the lower portion extends to the corner portion 42c.

The latch connecting portion 55a is formed with three bolt holes and the striker opening 55c through which the striker 53 is inserted, and the impact bar connecting portion 55b is formed with two bolt holes. As shown in FIG. 14, the impact bar connecting portion 55b is fastened together with the rear end portion of the impact bar 46 via the fastening member b2 inserted into the bolt hole at the top of the rear mounting portions 42s and 42t. As shown in FIG. 16, the latch connecting portion 55a is fastened together with the latch device 52 via a fastening member (not shown) inserted into the bolt hole in the latch mounting portion 42d. As a result, the impact load acting on the impact bar 46 is distributed and transmitted from the latch reinforcing member 55 to the center pillar 4 via the striker 53.

Next, the beltline rain outer member 43 and the beltline rain inner member 44 will be described. As shown in FIGS. 4 and 6, the beltline rain outer member 43 extending linearly in the front-rear direction is formed in a closed cross section (hollow) shape. In the beltline rain outer member 43, the front end portion and the rear end portion of the closed cross-sectional portion are fastened to the outer upper end portions of the front side vertical wall portion 41 and the rear side vertical wall portion 42 in the vehicle width direction via a plurality of fastening members, respectively. Has been done. The beltline rain outer member 43 includes an outer upper vertical wall portion 43a extending linearly at the upper end portion and an outer lower vertical wall portion 43b extending linearly at the lower end portion. A connecting wall portion 23b is attached to the upper portion of the outer upper vertical wall portion 43a.

As shown in FIGS. 4 and 7, the beltline rain inner member 44 extending linearly in the front-rear direction is formed in a closed cross section (hollow) shape. The beltline rain inner member 44 includes an inner upper vertical wall portion 44a extending linearly at the upper end portion and an inner lower vertical wall portion 44b extending linearly at the lower end portion. In the beltline rain inner member 44, the inner upper vertical wall portion 44a is fastened to the inner upper end portion of the front vertical wall portion 41 and the rear vertical wall portion 42 in the vehicle width direction at one place each via a fastening member, and the inner lower vertical wall portion 44 is fastened. The portions 44b are fastened to the front vertical wall portion 41 and the rear vertical wall portion 42 at two locations via fastening members at the inner upper ends in the vehicle width direction.

As shown in FIGS. 5 to 7, the frame member 32 includes an impact bar 46, a stiffener 47, a covering member 48, first to third seal members 56 to 58, and a pair of door glass units 60. The belt line seal member and the like are attached.
As described above, the impact bar 46 is arranged in a forward ascending manner from the middle portion of the front vertical wall portion 41 to the corner portion 42c of the rear vertical wall portion 42. On the outer wall surface of the impact bar 46, a plurality of sealer members 56a that can be adhered to the back surface of the outer panel 11 are provided.

The stiffener 47 is a member for ensuring the tension rigidity of the latter half of the outer panel 11.
The Al alloy stiffener 47 is formed in an inverted triangular shape when viewed from the side, and three upper portions are fastened to the lower vertical wall portion 43b of the outer, and one lower portion is fastened to the impact bar 46. The stiffener 47 is formed with a plurality of lower (for example, three) lightening portions for the purpose of weight reduction, and a plurality of sealer members 57a that can be adhered to the back surface of the outer panel 11 are provided around these lightening portions. There is.

As shown in FIGS. 2 and 5, a covering member 48 extending back and forth and having a beltline seal inner member (not shown) mounted on the upper part of the beltline rain inner member 44 (inner upper vertical wall portion 44a) is provided. It is attached. The covering member 48 is formed so as to have a substantially L-shaped cross section, and is formed so as to cover the gap between the door glass 61 and the beltline rain inner member 44 on the upper side. The door glass unit 60 is composed of a door glass 61, a regulator mechanism 62 for raising and lowering the door glass 61, and the like. The regulator mechanism 62 includes a pair of front and rear guide rails for guiding the door glass 61, a motor unit for raising and lowering the door glass 61, and the like. The upper portion of the regulator mechanism 62 is fixed to the inner upper vertical wall portion 44a at two locations and the inner lower vertical wall portion 44b at one location, and the lower portion is fixed to the lower wall portion 45 at one location.

Next, the first to third seal members 56 to 58 will be described.
The first to third seal members 56 to 58 are made of an elastic body (for example, a rubber material) provided with a hollow portion. As shown in FIGS. 2, 5, and 7, the first seal member 56 is arranged on the outermost peripheral side, the second seal member 57 is arranged on the inner peripheral side of the first seal member 56, and the third seal member is arranged. 58 is arranged on the inner peripheral side of the second seal member 57.

The first seal member 56 seals the lower portion and the rear portion of the frame member 32 including the corner portion 41c with respect to the vehicle body. This is because when the seal member is arranged on the front end edge portion of the inner member 30, a repulsive force is generated in the region near the hinge 51, which may hinder the closing operability of the door.
The second and third seal members 57 and 58 crawl from the front upper end portion of the frame member 32 to the rear upper end portion via the lower portion and seal the vehicle body.

As shown in FIGS. 11, 12, 14, and 16, a plurality of first seal members 56 extend in the vehicle width direction to the lower portion of the front vertical wall portion 41, the rear vertical wall portion 42, and the lower wall portion 45. It is fixed via the fastener f1. In the rear vertical wall portion 42, a plurality of fasteners f1 are arranged on the flange portion 42f so as to be aligned with the fastening member b1 in the circumferential direction, and the first seal member 56 fixed to the flange portion 42f is a center pillar. It seals between 4 and 4. As a result, the first seal member 56 covers the head of the fastening member b1 from the inside in the vehicle width direction, thereby preventing the occupant from visually recognizing the fastening member b1 and improving the appearance.

Further, the first seal member 56 includes a gap filling portion 56a extending outward in the vehicle width direction from the outer peripheral edge portion. The gap filling portion 56a engages with the bent portion 42e, in other words, the bent portion 42e is sandwiched in cooperation with the inner peripheral portion and is generated at the abutting portion between the frame mounting portion 22c and the flange portion 42f. It is configured to cover the gap from the outer circumference. As a result, the mountability of the first seal member 56 to the flange portion 42f is strengthened and the appearance is improved.
Similarly to the rear vertical wall portion 42, a plurality of fasteners f1 are arranged on the flange portion 42f so as to be aligned with the fastening member b1 in the circumferential direction in the lower portion of the front vertical wall portion 41, and the gap filling portion 56a is provided in the flange portion. The gap generated in the abutting portion with 41f is covered from the outer periphery. The sealing pressure (inscribed pressure) of the first sealing member 56 is set to be lower than the sealing pressure of the second sealing member 57.

As shown in FIGS. 11, 12, 14 to 16, the second seal member 57 is fixed to the front vertical wall portion 41 and the rear vertical wall portion 42 via a plurality of fasteners f2 extending in the front-rear direction. It is fixed to the lower wall portion 45 via a plurality of fasteners f2 extending in the vertical direction. The second seal member 57 is a main seal member that seals the inside and outside of the vehicle between the side sill 2, the hinge pillar 3, the center pillar 4, and the inner member 30. The sealing pressure of the second sealing member 57 is set higher than the sealing pressure of the first and third sealing members 56 and 58.

As shown in FIGS. 11 to 16, the third seal member 58 is fixed to the front vertical wall portion 41, the rear vertical wall portion 42, and the lower wall portion 45 via a plurality of fasteners f3 extending in the vehicle width direction. There is.
The third seal member 58 is a seal member that seals between the interior trim 7 and the door trim 59. A hollow portion is formed in the third seal member 58 corresponding to the interior trim 7 and the door trim 59, respectively, and the fastener f3 is arranged between the hollow portions.

Next, the operation and effect of the side door structure of the vehicle V will be described.
According to this side door structure, a hinge reinforcing member 54 that is connected to the hinge 51 and reinforces the hinge mounting portion 41d for mounting the hinge 51 on the front vertical wall portion 41, and a hinge reinforcing member 54 that is connected to the latch device 52 and is connected to the rear side. Since the vertical wall portion 42 has a latch reinforcing member 55 for reinforcing the latch mounting portion 42d for mounting the latch device 52, it is possible to strengthen the connection between the hinge 51 connected to the vehicle side and the front side vertical wall portion 41. , The connection between the latch device 52 connected to the vehicle body and the rear vertical wall portion 42 can be strengthened. Since the front vertical wall portion 41 and the rear vertical wall portion 42 are formed in the cast vertical wall portion by casting molding, the weight of the side door 1 is reduced by casting molding using a light alloy material such as Al alloy. be able to. Since the hinge reinforcing member 54 and the latch reinforcing member 55, which are reinforcing members for casting provided on the vertical wall portion of the casting, are formed to have higher ductility than the vertical wall portion of the casting and are connected to the impact bar 56, the vehicle side collision occurs. Even if the vicinity of the impact bar mounting portion (41s, 41t, 42s, 42t) of the vertical wall of the casting is damaged due to stress concentration, the impact load acting on the impact bar 46 is applied to the vehicle body via the reinforcing member for casting. It can be distributed and transmitted, and the intrusion of the impact bar 46 into the vehicle interior can be avoided.

The front vertical wall portion 41 and the rear vertical wall portion 42 are formed into a cast vertical wall portion by casting, and both ends of the impact bar 46 are connected to the hinge reinforcing member 54 and the latch reinforcing member 55, respectively, so that the side door is used. The weight of 1 can be further reduced. Further, the impact load acting on the impact bar 46 can be distributed and transmitted to the vehicle body via the hinge reinforcing member 54 and the latch reinforcing member 55, further avoiding the intrusion of the impact bar 46 into the vehicle interior. can.

The front vertical wall portion 41 is a plurality of ribs that connect a plurality of front mounting portions 41s, 41t arranged along the longitudinal direction of the impact bar 46 and a plurality of front mounting portions 41s, 41t extending in the vehicle width direction. The rear vertical wall portion 42 has a portion 41u, and the rear side vertical wall portion 42 includes a plurality of rear side mounting portions 42s and 42t arranged along the longitudinal direction of the impact bar 46, and a plurality of rear side mounting portions extending in the vehicle width direction. Since it has a single rib portion 42u that connects the portions 42s and 42t, bending moments can be generated at both ends of the impact bar 46, respectively, and the amount of the impact bar 46 invading the vehicle interior at the time of a vehicle side collision. Can be reduced.

The front vertical wall portion 41 has a pair of upper and lower hinges 51, and the hinge reinforcing member 54 is arranged so as to reinforce the hinge mounting portion 41d for mounting the pair of hinges 51, and the front end portion of the impact bar 46. Is connected to the hinge reinforcing member 54 at a position corresponding to the pair of hinges 51, so that the impact load acting on the impact bar 46 is distributed and transmitted to the pair of upper and lower hinges 51 via the hinge reinforcing member 54. It is possible to improve the support rigidity of the front end portion of the impact bar 46.

The rear vertical wall portion 42 extends forward from the corner portion 42c formed at the lower end portion, and the latch reinforcing member 55 is arranged from the latch mounting portion 42d to the corner portion 42c, and the impact bar 46 has an impact bar 46. Since the rear end portion is connected to the latch reinforcing member 55 at the corner portion 42c, the support rigidity of the rear end portion of the impact bar 55 can be improved.

Next, a modified example in which the embodiment is partially modified will be described.
1] In the above embodiment, an example in which the outer member 10 and the inner member 30 are basically configured by using an Al alloy material has been described, but at least a material that can achieve a weight reduction effect may be used, such as a magnesium alloy or a magnesium alloy. Any material such as a high-strength resin material such as CFRP can be applied. When a high-strength resin material is applied, the hinge reinforcing member 54 and the latch reinforcing member 55 are resin reinforcing members.

2] In the above embodiment, the example in which the cast vertical wall portion is the front vertical wall portion 41 and the rear vertical wall portion 42 has been described, but only the front vertical wall portion 41 may be used as the cast vertical wall portion, and the rear side may be used. Only the vertical wall portion 42 may be used as the cast vertical wall portion. Further, for example, when only the front vertical wall portion 41 is a cast vertical wall portion and the rear vertical wall portion 42 is a general steel plate vertical wall portion, only the hinge reinforcing member 54 is from the front vertical wall portion 41. The latch reinforcing member 55 does not have to be more ductile than the rear vertical wall portion 42.

3] In the above embodiment, an example in which the impact bar 46 is attached to the frame member 32 by the front mounting portions 41s and 41t and the rear mounting portions 42s and 42t has been described, but one of the front and rear mounting portions is set to one place. It is also good, and it may be 3 or more places. It is also possible to make the number of front mounting portions different from the number of rear mounting portions.

4] In the above embodiment, an example in which the front mounting portions 41s and 41t are connected by two upper and lower rib portions 41u and the rear mounting portions 42s and 42t are connected by a single rib portion 42u has been described. The mounting portion of the above may also be connected by a single rib portion, or may be connected by a plurality of rib portions. The number of rib portions can be arbitrarily set for connection.

5] In the above embodiment, the example in which the belt line rain outer member 43 and the belt line rain inner member 44, which are the belt line reinforcing members, are not connected to the hinge reinforcing member 54 and the latch reinforcing member 55, respectively, has been described. The line rain outer member 43 and the belt line rain inner member 44 may be connected to the hinge reinforcing member 54 and the latch reinforcing member 55, respectively.
In this case, the hinge reinforcing member 54 is arranged from the hinge mounting portion 41d to the upper end portion of the front vertical wall portion 41, and the latch reinforcing member 55 is arranged from the latch mounting portion 42d to the upper end portion of the rear vertical wall portion 42. The front and rear ends of the belt line rain outer member 43 and the belt line rain inner member 44 are connected to the upper ends of the hinge reinforcing member 54 and the latch reinforcing member 55 by co-fastening or the like. As a result, in addition to distributing the impact load acting on the impact bar 46 to the vehicle body via the hinge 51 and the latch device 52, the impact load is distributed and transmitted to the beltline rain outer member 43 and the beltline rain inner member 44. , The intrusion of the impact bar 46 into the vehicle interior can be further avoided.

6] In addition, a person skilled in the art can carry out the present invention in a form in which various modifications are added to the above-described embodiment or in a combination of the respective embodiments without departing from the spirit of the present invention. It also includes various modified forms.

1 Side door 10 Outer member 30 Inner member 41 Front vertical wall part (casting vertical wall part)
41d Hinge mounting part 41s (front) Front mounting part 41t (rear) Front mounting part 41u Rib part 42 Rear vertical wall part (casting vertical wall part)
42c Corner part 42d Latch mounting part 42s (front) Rear mounting part 42t (rear) Rear mounting part 42u Rib part 43 Beltline rain outer member 44 Beltline rain inner member 46 Impact bar 51 Hinge 52 Latch device 54 Hinge reinforcement member (Reinforcing member for casting)
55 Latch reinforcement member (reinforcement member for casting)
V vehicle

Claims (6)

An outer member, a front vertical wall portion in the front-rear direction of the vehicle body provided with a hinge connected to the outer member and rotatable with respect to the vehicle body, and a latch device that can be locked / unlocked with respect to the vehicle body are provided. It was erected over an inner member having a rear vertical wall portion in the front-rear direction of the vehicle body and a rear mounting portion formed on the rear vertical wall portion from a front mounting portion formed on the front vertical wall portion. In the side door structure of a vehicle equipped with an impact bar
A hinge reinforcing member that is connected to the hinge and reinforces the hinge mounting portion for mounting the hinge on the front vertical wall portion.
It has a latch reinforcing member that is connected to the latch device and reinforces the latch mounting portion for mounting the latch device on the rear vertical wall portion.
At least one of the front vertical wall portion and the rear vertical wall portion is formed of a cast / resin vertical wall portion by casting or molding or a high-strength resin material.
Of the hinge reinforcing member and the latch reinforcing member, the casting / resin reinforcing member, which is a reinforcing member provided on the casting / resin vertical wall portion, has higher ductility than the casting / resin vertical wall portion. The side door structure of the vehicle, which is characterized by being connected to the impact bar together with the above. The front vertical wall portion and the rear vertical wall portion are formed of a casting / resin vertical wall portion by casting or molding or using a high-strength resin material.
The vehicle side door structure according to claim 1, wherein both ends of the impact bar are connected to the hinge reinforcing member and the latch reinforcing member, respectively. The front vertical wall portion includes a plurality of front mounting portions arranged along the longitudinal direction of the impact bar, and one or a plurality of rib portions extending in the vehicle width direction to connect the plurality of front mounting portions. Have,
The rear vertical wall portion includes one or a plurality of the rear mounting portions arranged along the longitudinal direction of the impact bar and one or a plurality of rear mounting portions extending in the vehicle width direction to connect the plurality of rear mounting portions. The vehicle side door structure according to claim 2, further comprising a rib portion. The front vertical wall portion has a pair of upper and lower hinges.
The hinge reinforcing member is arranged so as to reinforce the hinge mounting portion for mounting the pair of hinges.
The vehicle side door structure according to claim 2 or 3, wherein the front end portion of the impact bar is connected to the hinge reinforcing member at a position corresponding to the pair of hinges. The rear vertical wall portion extends forward from the corner portion formed at the lower end portion in the front-rear direction of the vehicle body.
The latch reinforcing member is arranged from the latch mounting portion to the corner portion.
The vehicle side door structure according to any one of claims 2 to 4, wherein the rear end portion of the impact bar is connected to the latch reinforcing member at the corner portion. The inner member has a beltline reinforcing member that connects the upper end portions of the front vertical wall portion and the rear vertical wall portion in the front-rear direction.
The hinge reinforcing member is arranged from the hinge mounting portion to the upper end portion of the front vertical wall portion.
The latch reinforcing member is arranged from the latch mounting portion to the upper end portion of the rear vertical wall portion.
The vehicle side door structure according to any one of claims 2 to 5, wherein the front and rear end portions of the beltline reinforcing member are connected to the hinge reinforcing member and the upper end portions of the latch reinforcing member, respectively. ..

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